| Locality | Post Code |
|---|---|
| Agency Village, Roberts | 57262 |
| Claire City, Roberts | 57224 |
| Corona, Roberts | 57227 |
| Dry Wood Lake, Roberts | 57262 |
| Hammer, Roberts | 57255 |
| Linden Beach, Roberts | 57227 |
| Madsen Beach, Roberts | 57279 |
| New Effington, Roberts | 57255 |
| Ortley, Roberts | 57256 |
| Peever, Roberts | 57257 |
| Rosholt, Roberts | 57260 |
| Shady Beach, Roberts | 57227 |
| Sisseton, Roberts | 57262 |
| Sodak Park, Roberts | 57279 |
| Summit, Roberts | 57266 |
| Tekakwitha, Roberts | 57262 |
| Victor, Roberts | 57260 |
| White Rock, Roberts | 57260 |
| Wilmot, Roberts | 57279 |